Exhaust-valve for internal-combustion engines.



T. J. KOVEN. EXHAUST VALVE FOB INTERNAL COMBUSTION ENGINES.

APPLIUATION FILED PEB.23, 1909.

Patented Nov. 8, 1910.

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EXHAUST VALVE FOB INTERNAL oomaus'non ENGINES.

APPLIOATIOK IILL'D IBBJIi, i909.

Patented Nov. 8, 1910.

nrmmrsrs WITNESSES THEODORE J. KOVEN, F JERSEY CITY, NEW JERSEY.

EXHAUST-VALVE FOR INTERNAL-COMBUSTION ENGINES.

To all whom it may concern;

Be it .known that I, TI-munoni; JlELllS Kovmw, a citizen of the United States, and a resident of Jersey City, 'in the county of Hudson and State of New Jersey, have invented a. new and Improved Exhaust-Valve for Internal-Combustion Engines, of which the following is a full, clear, and exact descrl tion,

' e object of the invention is to provlde a new'and improved exhaust valve for in- 'ternal combustion engines, arranged to keep the valve cool and thus prevent the accumulationof soot and premature explosions.

In order to cool the valve, a cooling medium, such as water,is circulated through the valve, and the inlet and outletfor the cooling medium are arranged so as not to' interfere with the proper working of the valve.

A practicalembodiment of the invention is re resented in the accom an 1110 drawi forming 8. art of this specification in vfich'similar c aracters of reference iridicate corresponding parts in all the views.

Figure 1 is a sectional 'side elevation of 'the improvement; Fig. 2 is an enlarged sectional lan view of the valve on the line 2-2 0 Fig. 1; and Fig. 3 is an enlarged plan view of the coupling.

An internal combustion engine A, of any approved construction, is provided W1thl.l'l usual exhaust chamber B, provided with a valve seat C adapted to be opened and closed by an exhaust valve D, having its stem D mounted to slide in, bearing E forming part of the en 'ne A at the exhaust B. The outer end of t e valve stem D is provided with a collar F, on which presses one end of a spring G, resting with its other end on the bearing E, so as to normally hold the exhaust valve D to its seat C. The exhaust valve D is opened in the usual manner, to al low the products of combustion to exhaust at a proper time.

The valve D .is made hollow, that is, is-

Specification of Letters Patent.

Application filed-February 23. 1909. Serial No. 479,347.

tor, reservoir or 0t er place 0? dium .engagin Patented Nov. 8, 1910.

by the end D into the chamber D in sucha manner as to produce a whirlin of the cooling medium within the chem r D't, thus.

uniformly cooling the entire valve D. The cooling medium after having thus circulated in the chamber D passes into the outlet passage D.

Near the upper end of the valve stem D at the upper terminals of the passages D, D is arranged a coupling H, having ni ples H, H connecting with the up er en s of the passages D and D, as plain y indicated in Fig. 1. The nip le H is connected by a hose or a like fiexi le connection I with a nipple K on a supply pipe K connected with a suitable cooling me urn supply, the said pipe K being supported on a suitable bracket L attached to the engine A. Within the pipe K is arranged a. screen N to screen the cooling medium, thus preventing cloggi'ng of the valve by impuritigs contained in the cooling medium.

The nipple H is connected by a hose or other flexible connection J with the nipple O of a discharge pi e O, lea'din to a radiadischarge, the pipe 0 being supported on a bracket L attached to the engine A.. Now by the arrangement described, a circulating pump or other device forces the cooling medium through the and nipple H into the inlet passe e D and down the same into the chamber to cool the valve D uniformly bylcirculating therein, as fpreviously explained, "we cooling menally passing out of the chamber D and up through the nssage D" mto'the ni ple H, and-from t e latter by the flexible connection J, nipple O and p' e (i) to a suitable place of'discharge. By aving the ipe K, flexible connection I flexible connections I and J, it is evident The couplin H is preferably made in two sections 0 amped on the stem D ,by screws, as indicated in Fig. 3, and theieoupling connections are provided with pins H 4 the corresponding recesses in the stem D to hold the coupling against accidental displacement.

"Although I prefer the construction ,iif the coupling H, as described and shown in the drawings, it is evident that I do not limit myself to this detailed construction.

Having thus described my invention, I claim as new and desire to secure by Letters Hatent:

Aalevice for cooling valves of explosion eh ikies comprising in combination a hollow 'va ve. a stem connected therewith and hav ing a plurality of longitudinal passages connnumcatmg with. the interior of the valve, the inlet passage having a nipple extension in the said valve. the extension curving laterally away from the outlet. passage; a bracket at each sale of the valve. :1

snpply pipe supported on the bracket adjacent to the inlet passage, a discharge pipe supported on the bracket adjacent to the outletpassage, and a flexible connection between each of said pipes and the adjacent passage.

In testimony whereof I have signed my name to this'specification in the l two subscribing witnesses.

THEODORE J. KOVEN.

Witnesses 2 Tune. G. Hos'rna, .Jonx 1. DAVIS.

presence of 20 

